2 years ago

P is located at (8,-7) and Q is located at (-6,-3) on the coordinate plane

Mathematics

1 answer:

Readme [11.4K]2 years ago

5 0

Answer:

Step-by-step explanation:

1,-5

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-.25 x+1.3=-.55x-.2 find x

Mamont248 [21]

You need to isolate the variable my dividing each side by factors that don’t contain the variable
x=-5

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2 years ago

The average income, I, in dollars, of a lawyer with an age of x years is modeled with the following function:

Alinara [238K]

The answer is 37 years old.

I = -425x² + 45500x -650000
I = 450000

-425x² + 45500x -650000 = 450000
-425x² + 45500x - 650000 - 450000 = 0
-425x² + 45500x - 1100000 = 0

Divide all factors by 25:
- 17x² + 1820x - 44000 = 0

This is quadratic equation (ax² + bx + c = 0)
$x_{1,2} = \frac{-b+/- \sqrt{ b^{2}-4ac } }{2a} = \frac{-1820+/- \sqrt{ 1820^{2}-4*(-17)*(-44000) } }{2*(-17)} = \\ \\ = \frac{-1820+/- \sqrt{3312400-2992000 } }{-34} = \frac{-1820+/- \sqrt{320400} }{-34} =\frac{-1820+/- 566}{-34} \\ \\ 
x_1= \frac{-1820+ 566}{-34}= -37 \\ \\ 
x_2 = \frac{-1820- 566}{-34}=70$

Since, the youngest age is needed, the correct answer is x = 37

3 0

3 years ago

What temperature is equivalent to 373 k?<br> a. 0 °c<br> b. 50 °c<br> c. 100 °c<br> d. 373 °c

natima [27]

C. 100 °C is the answer

7 0

3 years ago

Plz help me thank you so much

BartSMP [9]

Answer:

7. b

8. a